Electric locomotive



sept z5, 1923.

HQ Pls-:PER

ELECTRIC LOCOMOTIVE Filed June 25. 1921` 6 Sheets-Sheet l L11/ 11 forsept. 25, 1923. 1,468,920

H. PIE-PER ELECTRIC LOCOMOTIVE Filed June 23. 1921 6 Sheets-Sheet 2sept. 25,1923.

H. PIEPER ELECTRIC LOCOMOTIVE Filed June 25 1921 6 Sheets-Sheet Z5 sept,25,1923. 1,468,920

H. PIEPER ELECTRIC LOCOMOTIVE Filed June 23 ).921` 6 Sheets-Sheet 4 Fig.5.l

Sept. 25 1923. 1,468,920

H. PIEPER n ELECTRIC LOCOMOTIVE Fileduune 2s. 1921 Smets-sheet s 2Figli.

Sept. 25,1923. i 1,468,920

H. PIEPER ELECTRIC LOCOMOTIVE Filed June 23 1921 v 5 Sheets-Sheet GPatented Sept. 25, 1923. y

UNITED STATES PATENT i o Price.

BELGIQUE, SOCIETE ANONYME, OF BRUSSELS, BELGIUM.

ELEcTnIc LocoMoTrvE.

- Application nien June 23, 1921. 'serial No. 479,942.

Bew itL known` that I, @HENRI Pmrnn,

i engineer, asubject of the Kin of Belgium,

and resident ofLiege, 56 Quai de Fragnee, Belgium, have invented certainnew and useful Improvements in Electric Locomo- 7 tives; andl do herebydeclare the following tobe4 a full, clear, and exact description of theinvention, such as will enable others skilled in the 'art towhichitappertains to makeand vuse the same, reference being had ,y to theaccompanying drawings, and toletters or figures of reference markedtherein, which form a part ofthis specification.

lThis invention relates vto an electric'loco'- motive which may"comprise any number of axles, each of ythelaxles being operated byanindependent motor. t

l'locomotives of "this kind which yhave hitherto 'been constructed aregenerally vprovided `with a motor similar to'those used forelectrictramways, each of them actuating the'axles by meansvof yOears. Thisarrangement cannot be used for locomotives of hi h power, because ytherspace which 'is lavailable for the 4motors yis insufficient; moreover,it V'has the great drawback of causing a considerable part `of theweight of the motoi's to be directly supported by the axles, andtherefore, the centre of gravity is relatively low. n

Further, experiencefhas shown that for high speed' locomotives, it ispreferable in" order to avoidy an' excessivey fatigue of the permanentvvway, to raise the centre of gravity,`andon the other hand, theactuation :of -f the 'axles by' means of an arrangement of connectingrods and cranks has not given' good resultsfor high speeds, and litisconsidered that the most favourable arrangement for this kind yoflocomotive is to actuate-eachxle by' means of an independent motor.r Thepresent invention krealizes the above desiderata byl arranging themotors vertically, e'achxabove the axle which it actuates.

T hevmotors are fixed on to the ,frame/of the carriageyand form a.yrigid whole together with thefdriving shafts of the 'axles which theyactuatel by means of gears, endless screws'orothertransmissionlmembers.'f c

' They connection between the said driving :shafts and the wheels'iseffected by meansiof members'allowing displacements ofthe said axleslrelativelyto the said driving shafts.

In a particular mode of carrying the inrventioninto effect, ythe saiddriving shafts yare hollow and each 'of them is'traversed'by acorresponding axle, the said 'axles' being arranged in such a manner asto be capable of a displacement relatively to the ysaid hol-y lowshafts. The latter drive kthe wheelsby means of springs or any othermembers `al-' lowingthe said displacements, whilst im-V partinga certainresiliencyv to sion. v'In order to avoid the influence of gyroscopceffects, the motors ma such a manner that the neighbouring motors shallrotate in opposite directions. When a relatively' high power is to b thetransmisbe arranged in Y,

transmitted to each axle, a limitation is caused bythe dimensions of thegears. -f-,In order to avoid the said dra\vback,each axle may beactuated by two independentshafts, each carrying an` armature, the 1said karmatures rotating inl two different magnetic fields arranged inone motor head only, each gears. .Y c

yIt should be pointed out that the increase inthe number of armaturesallows an increase of the number of possiblecombinaf tions of couplings.f

In order to 'reduce the distance between the said two sl1af`ts,^thedifferent magnetic fields of feach motor may beseparated by a simplepartition whichrealizes foreach of them a consequent 'pole of the samepolarity. In the rcase of motors comprising two shafts and twoarmatures,-the gyroscopic eifect'may `-be annulled in each motor byturning the shafts in opposite directions.

yThe drawings accompanying `the present description illustrate by lwayof example two modes' of' carrying the invention into effect.

In the drawings: n Figures 1 torelate struction.

- Figs.v 5 to'8 relate to the secondfmodeof construction. f l y f jFigurefl is an elevationalfview showing the arrangement of the motorsabove the to one mode of con axles.

`rarmature"operating the axle by means ofvk s a plan view withpartialsec- Gti OD it lll@ ond mode o construction.

Figure r -s an elevation showing the aro i rangement ot the motors ahovethe axles.

Figure G is plan view with iartial seo tion LA Figure .7 shows a motor1)rejected on a plane perpendicular to an axle. T his ligure compriC apartial section made along the axis or the axle. l.

Figure S shows a mode oit projection on plane Aperoendicular to theaxle. ln the case ot Figures l to the wheels Qv ot each axle areactuated hy one driving strait only 3. The motor et, the transmissionmembers and the casings such as 5 are carer directly hy the trarne G.

i l The axlesl pass freely and with a certain play through hollow Shafts'T helongino to the transmissliion nienil--rs and connected to the"ran'ie through the intermediary o i' susQension siringa S in the usualymanner. The hollow shafts l' are actuated hv the drivi* shaft`througjhthe interinediarv ical pinions' Sl and ll). the said sh tate inhearings ll .integral with the easings o.

"-"he movement o?, rotation oi: the hollow mitted to the wheels hy ,ereall( vingy a .ce displaie axles in :e the hollow shal end, use is inaneoi springs l2 which ci r o, to l?) integral with T and at the other endto avoid the influence ot gvrof, the motors may he arranged nner thatany two adiacent moA gure ehm that in the, uccrou which nasl lilust heendrivingV shalt only is :1rad Al. ln contredismodc ot cons' iee" res toS. each motori h rwo arnuitures lo and with the tivo driving shafts 13the wheels ol'i one and the t The said 'wo driving shafts l. `te hothone and the same axle Q0. on which conical piniois 2l and 2Q aresecured. inearing;- with Ycon- 1 QS and keyed upon .Chatte i8 and 19.

The other elements ot l tranemission menihers are. illust uros to andare shown by the same reference uunierais.

As seen from the section ot Figure (i. the 1`nagnetic iields of the tworotors 16 and 17 he the ated W'hat lf claim is:

il. ln an olea-tric locomotive comprising a plurality or axles, aplurality of driving shafts for each axle, said driving shafts .'ngactuated hy vertically arranged electric motors, the movement of saiddriving shafts being transmitted to the axles by means of conical wheelswhich cause axial pulls on the axles. said conical wheels bein arrangedhack to haelt whereby said axia pulls are annuled. l

2. In anelectric locomotive comprising a olurality of axles, a pluralityof driving shafts tor each axle, said driving shafts being actuated hyVvertically arranged eleci"Vic motors, each of saiddriving shafts earryingr anY armature. the motors of each iflorality of drivingr shaftsbeing arranged to simultaneously rotate in opposite directions tothereby rotate the axles.

3. In an electric locomotive comprising eevcral axles and severalvertically placed motora actuatingr said axles. the disposition op!I woshaitsactuating the same axle in the casingr ot each motor, each ot thesaid shafts cari an armature, the said armatures rotat1 g in twodifferent magnetic fields arraiic'ed in one and the same, casing.

l. an electric` locomotive comprisin se-:eral axles Vand severalvertically place( motors actuatingr said axles, the dis osition ii twoshafts actuating the same ax e in the ca ot each motor. cach of the saidshafts cariving an armature. the said armatures rotating in twodillerent magnetic fields arrangedq in one and the same casing andseparated hy a partition producing for each oi them a` consequent poleof the same `polarity. l

In an electric motor. the combination ot a plurality ot axles, aplurality of driving shatts for each axle. an armature carried by eachdrivingr shaft, the armatures of at least two driving shafts tor thesame axle rotating` in dilerent magnetic fields arranged in one and thesame casing. a hollow shaft surrounding each axle,V transmission gearinghctwccn the driving shafts for each axle and the hollow shaftsurroundingsaid axle, and elastic means ttor transmitting the movement ot eachhollow shaft to its corresponding axle while permitting the latter t0 beilisnlaced relative to the former..

G. ln an electric locomotive comprising a pluralityot axles and aplurality of motors actuating said axles, the disposition of two shaftsactuating the same axle in the casing ot'- each motor. each of saidshafts carrying an armature, the said armatures rotating in oiljipositedirections in two diterent magnetic lields arranged in one and the samecasing and separated by a partition roducing for each of them' aconsequent po e of the same polarity, a hollow shaft surrounding eachaxle, gearing for transmitting the movement' from the actuating shaftsfor each axle to the hollow shaft surrounding said axle,

and elastic means for transmitting the movement of each hollow shaft toits corresponding axle While permitting the latter to be displacedrelative to the former.

In testimony whereof I have signed my name to this specification'.

' l HENRI PIEPER.v Witnesses: A Y v f ALFRED VANDER HAEGHEY, CHARLESMERcHm.

